A Plunger Type Fuel Injection Pump with Multiple Working Conditions and Variable Fuel Supply

Abstract

The invention provides a plunger-type fuel injection pump with multi-working conditions and variable oil supply, which mainly includes a plunger coupling, an oil quantity adjustment device composed of a rack, a gear and a rotating shaft, and a drive frame, a top plate and a top plate lever. The drive selection device composed of the guide plate, the roller frame and the roller drive auxiliary device, the two-speed cam drive device composed of the drive shaft, low speed cam and high speed cam. It is characterized by the use of three kinds of chute and high and low speed cams to realize variable oil supply under multiple working conditions. The invention realizes the multi-working condition adjustment of the effective stroke of the plunger through the three kinds of chute on the side of the plunger, that is, the hyperbolic chute realizes fine adjustment and buffer injection; the linear chute realizes convenient linear adjustment and precise control, and reverse hyperbola Type chute to realize rapid emergency adjustment; through the magnetic block at the gap of the gear and the magnetic bar on the plunger sleeve, the positioning of the three chute can be realized; through the high and low speed cams on the drive shaft, the pumping frequency can be adjusted to realize multi-tasking variable fuel supply.

Description

technical field [0001] The invention relates to a plunger type fuel injection pump with variable oil supply in multiple working conditions, in particular to a multi-working condition adjustment of the effective stroke of the plunger through three kinds of chute on the side of the plunger; through the hyperbolic chute , to realize the fine adjustment of the effective stroke of the plunger and buffer oil injection; through the linear chute, to realize the convenient linear adjustment and precise control of the effective stroke of the plunger; through the reverse hyperbolic chute, to realize the rapid emergency adjustment of the effective stroke of the plunger; Through the magnetic block at the gap of the gear and the magnetic bar on the plunger sleeve, the positioning of the three inclined slots is realized; through the low-speed cam and high-speed cam on the drive shaft, the pumping frequency of the plunger fuel injection pump is adjusted to realize multiple working conditions ...

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the fixed and non-adjustable shape of the plunger chute, which is common in the use of the existing plunger type fuel injection pump, and the variable adjustment of the effective stroke of the plunger under multiple working conditions cannot be realized, and the oil pumping frequency is fixed and the multitasking cannot be realized. In order to solve the problems of variable fuel supply under different conditions, a plunger fuel injection pump with variable fuel supply under multiple working conditions is provided, which can effectively solve the above problems.

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